<div class="items">
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
</div>

html {
  height: 100%;
}

body {
  margin: 0;
  height: 100%;
}

.items {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  height: 100%;
}

.item {
  box-sizing: border-box;
  border: 3px solid #000;
}

.item {
  width: 25%;
  height: 50%;
  background-color: rgb(119, 47, 105);
}

.item:nth-child(1) {
  width: 50%;
  height: 100%;
  background-color: orange;
}